“There are no days in this world during which worship is more beloved to Allah, Glorious is He, than the (first) ten days (of Dhul- Hijjah). Fasting one of these days is equivalent to fasting for one year, and one night of them is equal to Lailatul-Qadr.”
قَالَ رَسُولُ اللَّهِ ﷺ مَا مِنْ أَيَّامِ الدُّنْيَا أَيَّامٌ أَحَبُّ إِلَى اللَّهِ سُبْحَانَهُ أَنْ يُتَعَبَّدَ لَهُ فِيهَا مِنْ أَيَّامِ الْعَشْرِ وَإِنَّ صِيَامَ يَوْمٍ فِيهَا لَيَعْدِلُ صِيَامَ سَنَةٍ وَلَيْلَةٍ فِيهَا بِلَيْلَةِ الْقَدْرِ